That don't make it the best round. I read somewhere that most of the grizzlies killed in the states was with 30-30's. It isn't the best cartridge, but it's what the settleers and the indians had when the West was being won, and that's what they used. Moose aren't incredibly tough, or strong willed like a grizz, they die as easy (size comparably) as a deer, but you also want to shoot them with a size comparably bullet.